1. mybatis批量插入数据

   <insert id="saveByList" useGeneratedKeys="true" parameterType="java.util.List"> 
     insert into T_App_Default_User(UserID,AppType,CreateTime)
    values  
    <foreach collection="list" item="item" index="index" separator="," >  
        (#{item.userId},#{item.appType},now())  
    </foreach> 
    </insert>
    

public interface AppDefaultUserMapper {
    void saveByList(List<Map<String, Long>> list);
}